diff --git a/src/Symfony/Component/Console/Helper/DialogHelper.php b/src/Symfony/Component/Console/Helper/DialogHelper.php
index adbf1869c0..fbb0f06623 100644
--- a/src/Symfony/Component/Console/Helper/DialogHelper.php
+++ b/src/Symfony/Component/Console/Helper/DialogHelper.php
@@ -385,7 +385,7 @@ class DialogHelper extends Helper
     /**
      * Returns the helper's input stream.
      *
-     * @return string
+     * @return resource|null The input stream or null if the default STDIN is used
      */
     public function getInputStream()
     {